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At the hospital, Nusslock said she was diagnosed with a premature rupture of the membrane of the amniotic sac — a dangerous complication in which an abortion is a recommended treatment.

A pair of twins who shared the same amniotic sac, blood flow and placenta have been successfully delivered, which their mother has described as a "miracle".

Membranes in the fluid-filled amniotic sac that surrounds the fetus often rupture or break at the start of childbirth - commonly called water breaking.

Membranes in the fluid-filled amniotic sac that surrounds the fetus often rupture or break at the start of childbirth — commonly called water breaking.

The fetus would not be viable outside the womb, and without the protection of the amniotic sac, the woman was vulnerable to an infection could threaten her life.